Allow leading whitespace on output format specific directives.
Allow leading whitespace on output format specific directives.

Distrotech/nasm,projedi/nasm,techkey/nasm,turingstudio/nasm,turingstudio/nasm,letolabs/nasm,projedi/nasm,letolabs/nasm,techkey/nasm,turingstudio/nasm,projedi/nasm,projedi/nasm,Distrotech/nasm,techkey/nasm,turingstudio/nasm,techkey/nasm,projedi/nasm,Distrotech/nasm,techkey/nasm,Distrotech/nasm,letolabs/nasm